Hair troubles 😔

Savannah🌺 • Mother&wife! 4 boys 10,8,6 and due May 28th!
I'm 28+6 weeks but my hair has been crap since the beginning. It's unmanageable, frizzy, just nasty. I've tried switching shampoos several times nothing helps. I usually just throw it up in a ponytail or bun. Anyone else's hair change during pregnancy?!